Joint.



G. P. YOUMANS.

JOINT.

APPLICATION FILED NOV. 23, l9l4. 1,221,946., Patensg 2 11917.

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v G. P. YOUIVIANS.

JOINT.

APPLxcAUoN FILED Nov. 23, 1914.

- LQQLM@ Y Patented Apr.10,1917.

2 SHEETS-SHEET 2.

AND" sino co., or nALAiviAzoo, MICHIGAN.

JOINT.

insiste.

Specicaton of Letters Patent.

Itatented Apr. I0, wir?.

Application led November 23, 1914. Serial No. 873,472.

To all 'whom t may concern.' f

Be it known that I, GEORGE P. YoUMANs, a citizen of the United States, residinggat Galesburg, Michigan, have invented certain.

My improved joint is especially; designed,

by me forl use in knock-.downscaffolding and similar frame structures although it maybe i readily adapted and is advantageous` forf use in various relations.

rIhe main object of this invention is to provide an improved joint by means of which sections, such `as sections of angle iron, may be quickly assembled or disassembled and one which when assembled is very secure and rigid.

Further objects, and objects `relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearlyy defined and. pointed out.. in the claims.

A structure which ment of my invention is clearly illustrated in the accompanying drawing forming apart of this specicatiomin which:

Figure I is a front elevation of astructure, consisting. of Aa pair of uprights or standards, embodying the features of my invention.

Fig. II is an enlarged detail longitudinal section on aline corresponding to line 2-2 of Fig. I through one of the upright section couplings.

Fig. III is an enlarged horizontal-section on. a line corresponding to line 3 3 ofj Fig. I.

Fig. IV is a detail front perspective vlew of one of the coupling members removed from the uprights, one, of the clamping members 6 being omitted.

Fig. V is a detail horizontal section on a line corresponding to line 5- 5 of'Fig. I, showing details of the .cross member clamp 13.

Fig. VI is a detail horizontal section on a line corresponding to line 6--6 of FigwI,

showing details of theg cross memberclamp 14.

is preferred embodi- Fig. VII is a perspective view; of theV clamp member 13.l

Fig. VIII is a detailperspective .view of the p crossmember 14.

Fig. IX is a detail horizontal section on a linewcorresponding to line 9-9 of Fig, I, showing details Vof the platformor hoisting member support. i

Fig.V X is a perspective view of the bracket member 22 of the support..

-Fig.zXI is a perspective view of the support. member 26.

In the drawing similar reference characters referto similar parts throughout the several views and the sectional' views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing.` In the struc.- ture illustrated the upright or frame members are formed of angle iron sections l. These frame sections l are provided.. with coupling members 2 angled in crosssection to receive the frame members andl having' transverse rib-like abutments Sfor the ends of the frame sections. 4The couplingmeinbers are also provided with pairs of forwardly projectingears 4 at each side of the abutment 3, the ears serving assupports .for the cross pins 5.. TheA clamping .members 6, in the structure illustrated, are angled in cross section to fit into the angles of the frame sections and are provided with forwardly tapered flanges 7 coacting with the cross pins 5 so that the clamping members constitute wedgesV which maybe driven behind the cross pins to securely clamp the upright sections in the angles of the coupling member. The flanges terminate in stops 8 and 9 which coact with the cross pins to retain the cross members when the frame sections are removed. The ends of the flanges are united by cross webs l0 which brace and support the flanges and permit the usevof a minimum amount of material in forming the wedge or clamping members.

The structure is assembled byy arranging the coupling upon theends of the sections .to be joined'so that the inner ends of the the `clamping wedges are driven to loosen the-same when the upright sections can be v sity for drilling the uprights or boring the cross pieces I provide pairs of clamps 13 and lt and the hooked clamping' bolts 15. The clamping members are! provided with bolt holes 16 for the bolts 15 which have laterally projecting portions adapted to engage the cross pieces secured thereby.

' The cross members are disposed against the side of one arm of the frame member to which it is to be attached. The clamping member 13 is engaged over the edge of the other arm of the frame member and is provided with a web-like part 17 fitting into the angle of the upright section, as shown in Fig. V, and the flange 18 fitting over the arm. This form prevents any twisting strain on the clamping member and also relieves the upright of substantially all twisting strain.

The clamping member 14; is provided with a hook-like flange 19 engaged` over the arm Y of the frame member projecting from the cross member. The hook bolts 15 are adjustable inthe bolt 'holes The pairs of clamp Vmembers are arranged so that the bolts engage opposite edges of the cross member and are on opposite sides of the frame members. The nuts 20 are preferably provided with hand pieces 21 for convenience in adjustment, the hand pieces obviating the necessity of using wrenches.

The platform or hoist supporting bracket members 22 are recessed at 23 to receive one arm of the uprights and are provided with 'an inwardly projecting flange 24C adapted to engage the other arm of the uprights, thus forming, in effect, an angled member embracing the uprights. The depth of the recess corresponds to the thickness of the upright arm, see Fig. X. The bracket member is provided with an inwardly projecting headed stud 25 adapted to receive the supporting member 26 which has Va slot 27 therein facing forwardly and adapted to be engaged with the stud as shown in Fig. X. Thefsupporting member`26 is provided with a clamp portion 28 at the rear of the slot 27. The cam portion 28 of this member 26 isY of such a widthas to fit between the head of the stud 25 and the inner face of the upright supporting the bracket against lateral movement onthe upright. The cam 28 engages in the anglev of .the upright so that downward stress on the outer end of the member 26 clamps the cam against the upright and thus clamps the bracket in its adjusted position on the upright. The front end of the bracket member is offset at 29 to support the projecting end of the member 26. The member 26 has an upwardly facing hook 30 adapted to receive a piece of timber or other suitable piece for the supporting of the platform, or the same may be used for hoisting r purposes and other purposes as desired.

I have illustrated and described my improvements in a simple and practical embodiment. The structure is very convenient to assemble and when erected is very rigid and secure. Comparatively light angle iron uprights of suitable length may be used as the same may be braced according to the load which they are to carry. This is of substantial advantage in that the relatively light and short upright sections can be conveniently transported and handled. I have not attempted to illustrate or describe certain modifications in structural details which I contemplate as I believe the disclosure made will enable those skilled in the art to which my invention relates to embody or'adapt the same as conditions may require.

I have illustrated my improved joint in a scaffold structure in connection with bracing features in order to better show its application and use. These bracing features and the hoist or platform supporting features described are reserved to be covered in a divisional application.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a structure of the class described, the combination of angle-iron frame sections, a coupling member angled to receive the said frame sections and having a transverse rib-like abutment for the ends of the frame sections and pairs of forwardly projecting ears at each side of the abutment, cross pins carried by said ears, and clamping members disposed behind the said cross pins and angled on their rear sides to fit into the angles of said frame sections and having forwardly projecting tapered flanges engaging said pins and terminating at their ends in forwardly projecting stops coacting with said cross pins to retain the clamping members when the frame sections are removed, thebends of the flanges being united by cross we s.

2. In a structure of the class described, the combination of angle-iron frame sections, a coupling member angled to receive the said fra-me sections and having a transverse rib-like abutment for the ends of the frame sections and pairs of forwardly projecting ears at each side of the abutment, cross pins carried by said ears, and clamping members disposed behind the said cross pins and angled on their rear sides to it into the angles of said frame sections and having forwardly projecting tapered iianges engaging said pins.

3. In a structure of the class described, the combination of angle-iron frame sections, an angled coupling member in which the ends of said frame sections are disposed, said coupling memberl being provided with cross members, and clamping members disposed behind the said cross members and angled on their rear sides to fit into the angles of said frame sections and having forwardly projecting tapered {ianges engaging said cross members and terminating at` their ends in Jforwardly projecting stops coacting with said cross members to retain the clamping members when the frame sections are removed, the ends of the flanges being united by cross webs.

4:. In a structure of the class described, the combination of angle-iron frame sections, an angled coupling member in which the ends of said frame sections are disposed, said coupling member being provided with cross members, and clamping members disposed behind the said cross members and angled von their rear sides to fit into the angles of said. frame sections and having forwardly projecting tapered flanges engaging said cross members.

5. In a structure of the class described, the combination of angle-iron frame sections, a coupling member angled to receive the said frame sections and having a transverse rib-like abutment for the ends of the frame sections and pairs of forwardly projecting ears at each side of the abutment,

cross pins carried by said ears, and tapered clamping members disposed in the angles of said frame sections behind the said cross pins to coact therewith.

6. In a structure of the class described, the combination of frame sections, a coupling member adapted to receive the said frame sections and having an abutment for the ends of said sections and cross members at each side of said abutment, and wedge clamping members disposed behind said cross members, said clamping members being provided with stops coacting with said cross members to retain the clamping members when the frame sections are removed.

7. In a structure of the class described, the combination of frame sections, a coupling member adapted to receive the said frame sections and having an abutment for the ends of said sections and cross members at each side of said abutment, and wedge clamping members disposed behind said cross members.

8. In a structure of the class described, the combination of frame sections, a coupling member adapted to receive said frame sections, cross members under which the ends of said frame sections are disposed, and wedge ,clamping members disposed behind said cross members to clamp said frame sections, said clamping members being provided with stops coacting with said cross members to retain the clamping members when the frame sections are removed.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

GEORGE P. YOUMANS. [Ls] Witnesses:

IJUELLA G. GREENFIELD, MARTHA GREGORY.

Copies of this patent may be obtained flor five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

